| The slippery context effect in psychophysics: intensive, extensive, and qualitative continua. | |
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MedLine Citation:
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PMID: 1549437 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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When subjects gave magnitude estimates of 500- and 2500-Hz tones at various SPLs, they judged a 500-Hz tone of 60 dB to be as loud as a 2500-Hz tone of 57 dB in one context (low SPLs at 500 Hz, high SPLs at 2500 Hz), but as loud as a 2500-Hz tone at 40 dB in another context (high SPLs at 500 Hz, low at 2500 Hz) (Marks, 1988). Such shifts in matches derived from judgments of multidimensionally varying stimuli are termed slippery context effects. The present set of seven experiments showed that slippery effects were absent from judgments of pitch of tones at different loudnesses, duration of tones at different pitches, and length of lines at different colors, though a small effect emerged in judgments of duration of tones and lights. Slippery context effects were substantial when subjects gave magnitude estimates of loudness of 500- and 2500-Hz tones under conditions in which the pitch at each trial either was cued visually beforehand or could be known through the regular stimulus sequence, and with instructions to make absolute magnitude estimates. The results are consistent with the view that slippery context effects occur automatically and "preattentively." |
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Authors:
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L E Marks |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Perception & psychophysics Volume: 51 ISSN: 0031-5117 ISO Abbreviation: Percept Psychophys Publication Date: 1992 Feb |
Date Detail:
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Created Date: 1992-04-21 Completed Date: 1992-04-21 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0200445 Medline TA: Percept Psychophys Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 187-98 Citation Subset: C |
Affiliation:
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John B. Pierce Laboratory, New Haven, CT 06519. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Attention* Color Perception* Discrimination Learning* Humans Loudness Perception* Pattern Recognition, Visual* Pitch Discrimination* Psychophysics Set (Psychology)* Size Perception* |
| Grant Support | |
ID/Acronym/Agency:
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DC00271/DC/NIDCD NIH HHS; DC00818/DC/NIDCD NIH HHS; RR05692/RR/NCRR NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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